To configure diagnostic logging by using Central Administration

Using this we can control the amount of diagnostic information to be logged in SharePoint.

1. Verify that the user account that is performing this procedure is a member of the Farm Administrators SharePoint group.
2. In Central Administration, on the Home page, click Monitoring.
3. On the Monitoring page, in the Reporting section, click Configure diagnostic logging.
4. On the Diagnostic Logging page, in the Event Throttling section, you can configure event throttling as follows:

To configure event throttling for all categories:

1. Select the All Categories check box.
2. Select the event log level from the Least critical event to report to the event log list.
3. Select the trace log level from the Least critical event to report to the trace log list.

To configure event throttling for one or more categories:

4. Select the check boxes next to the categories that you want.
5. Select the event log level from the Least critical event to report to the event log list.
6. Select the trace log level from the Least critical event to report to the trace log list.

To configure event throttling for one or more sub-categories (you can expand one or more categories and select any sub-category):

7. Click (+) next to the category to expand the category.
8. Select the check box next to the sub-category.
9. Select the event log level from the Least critical event to report to the event log list.
10. Select the trace log level from the Least critical event to report to the trace log list.

To configure event throttling for all categories back to default settings:

11. Select the All Categories check box.
12. Select Reset to default from the Least critical event to report to the event log list.
13. Select Reset to default from the Least critical event to report to the trace log list.
4. In the Event Log Flood Protection section, select the Enable Event Log Flood Protection check box.
5. In the Trace Log section, in the Path box, type the path of the folder to which you want logs to be written.
6. In the Number of days to store log files box, type the number of days (1-366) that you want logs to be kept. After this time, logs will automatically be deleted.
7. To restrict how much disk space the logs can use, select the Restrict Trace Log disk space usage check box, and then type the number gigabytes (GB) you want to restrict log files to. When logs reach this disk size, older logs will automatically be deleted.
8. After you have made the changes that you want on the Diagnostic Logging page, click OK.